CVE-2026-34517
unknown
CVSS v3
—
CVSS v2
—
VIR risk
—
Description
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, for some multipart form fields, aiohttp read the entire field into memory before checking client_max_size. This issue has been patched in version 3.13.4.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-34517
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-34517.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | affected | |
| debian | bullseye | affected | |
| debian | forky | fixed | 3.13.5-1 |
| debian | sid | fixed | 3.13.5-1 |
| debian | trixie | affected | |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | aiohttp | <3.13.4 | 3.13.4 |
References
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-3wq7-rqq7-wx6j
- https://nvd.nist.gov/vuln/detail/CVE-2026-34517
- https://github.com/aio-libs/aiohttp/commit/cbb774f38330563422ca0c413a71021d7b944145
- https://github.com/aio-libs/aiohttp
- https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4
- https://www.suse.com/security/cve/CVE-2026-34517.html
- https://security-tracker.debian.org/tracker/CVE-2026-34517
Verify integrity in audit chain (admin only). AS-IS.